11979719 has 2 divisors, whose sum is σ = 11979720. Its totient is φ = 11979718.

The previous prime is 11979659. The next prime is 11979727. The reversal of 11979719 is 91797911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11979719 - 2⁸ = 11979463 is a prime.

It is a super-2 number, since 2×11979719² = 287027334637922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11979719.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11979739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5989859 + 5989860.

It is an arithmetic number, because the mean of its divisors is an integer number (5989860).

Almost surely, 2^11979719 is an apocalyptic number.

11979719 is a deficient number, since it is larger than the sum of its proper divisors (1).

11979719 is an equidigital number, since it uses as much as digits as its factorization.

11979719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35721, while the sum is 44.

The square root of 11979719 is about 3461.1730670396. The cubic root of 11979719 is about 228.8137982839.

The spelling of 11979719 in words is "eleven million, nine hundred seventy-nine thousand, seven hundred nineteen".